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Old 30th September 2020, 01:12   #441
Arctic
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Originally Posted by FrattonEnder View Post
Finally got around to clearing out the plenum drain tubes on my ZT mk2 at the weekend - what a state they were in!


A few observations from me.

Quote:
1 - not sure the spyhole mod will work on the diesels, as one of the three cable bundles runs right in the line of sight between the hole and the drain tube.
I'm thinking about using a length of plastic piping (drilled to allow drainage) to aid access from the spyhole.
2 - the drain hole beneath the servo can be clean from on top, rather than rummaging around in the undercarriage. I used a flexi aerial from my old 400, shoved that in the hole (blunted end first) and then slid the spiral pipe bender over the top. Job done!


I now have a very clean and shiny plenum, which hopefully will stay that way. I've taken a leaf (pun intended!) from my Mondeo and fitted aluminium mesh (Isopon) behing the grills as well as the fix everyone else is doing at the wiper mechanism end.



Another thing, which is a bit of an aside. Changed the pollen filter while I was in there as it looked like it hadn't been changed for about a decade. Miraculously today, the temperature gauge hit midway for the first time since I've owned her (Feb this year). It this a bit of a coincidence or could it be related? Wondered if the blocked filter could have been contributing somehow. I've got the new in-line thermostat from DMGRS to fit at some point to go belt & braces, so that job can be shelved until the spring.
Hi Mike.

Have no doubt the spyhole will work on the diesel use one of these below.

1

2

3

4

5

6

These are the drain tubes from the inner wings, cut the lower plenum tubes of the same from under the car
7

8

9

also add some netting to stop the debris.
10

11

You could also use some fish tank filter.
12

13
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Old 30th September 2020, 08:19   #442
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Jules you are in lockdown again from Thursday i am told by my Daughter whom lives in Conwy, so it will be at least six months before anyone will get into Wales i bet.
Yeah mad times.
However I've still got plenty of local owners who need MOT work which is allowed !

Even if no more cars set foot here for a while it would give me a chance to catch up on restoring my own stock of 75's which have been waiting for a number of years, so still plenty to do
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Newbies do now!!
1. Plenum drains..all 3 or 4 year dependent
2. Cooling fan..All speeds functioning
3. Bonnet cable divider block
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Old 30th September 2020, 13:36   #443
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Thanks for the extra pics Arctic. Will have to have a play around with those drain tubes when the weather perks up again. I think my tubes may have been trimmed already as I ran an inspection camera down to see what they were like. No real sign of the flattened end, just a gentle taper down to probably a 8-10 mm opening.



I'm guessing the drain hole in the inner wing on the passenger side is supposed to have a tube fitted. Mine hasn't, so I'd better get that sorted.

Last edited by FrattonEnder; 30th September 2020 at 13:49..
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Old 30th September 2020, 13:58   #444
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With the drains trimmed the outlets are more like 20mm dia
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1. Plenum drains..all 3 or 4 year dependent
2. Cooling fan..All speeds functioning
3. Bonnet cable divider block
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Old 21st May 2021, 17:21   #445
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Thanks for this guys. Mine was pretty clean to be fair with no sign of water pooling but the drain hole was properly caked with dirt, a quick rodding and a hoover and all's well and good again. I didn't do the mod as it took me so little time to dismantle it to be fair but thanks nonetheless.
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Old 10th July 2021, 17:29   #446
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Thanks for this guys. Mine was pretty clean to be fair with no sign of water pooling but the drain hole was properly caked with dirt, a quick rodding and a hoover and all's well and good again. I didn't do the mod as it took me so little time to dismantle it to be fair but thanks nonetheless.
The mod is very quick and easy to do. Worth it for next time.----
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Old 2nd October 2021, 12:22   #447
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Default Plenum Season Started.

Once again plenum season is upon us, rain, leaves, wind, dust etc, so make sure you keep leaf debris to a minimum, rod at least once a week, and add some fish tank sponges, or netting to both sides of the outer wing.

1

2

3

4

5

6

7

8

9

Cut the ends of the plenum tubs under the car and in the wing area.

use some pliers to pull out the tube.
10

11

If the end as not been cut off do so now.
12

clean area and replace.
13

14

15

Also do the spyhole mod if you do not have it done.
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Check out the 2020 meet dates
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http://www.the75andztclub.co.uk/index.php?thepage=howto

" You do the work , we supply the expertise "
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